Is AD 97-27785 a recurring Airworthiness Directive?

Yes — AD 97-27785 requires a repetitive inspection. Next-due depends on the aircraft's time in service.

Which aircraft does AD 97-27785 apply to?

AD 97-27785 applies to Pilatus Britten-Norman — models BN-2. Serial/part conditions may narrow it to specific aircraft.

Airworthiness Directive 97-27785

recurring

AD 97-27785 · 1997-10-21 · airframe

Airworthiness Directives; Pilatus Britten-Norman Ltd. (Formerly Britten-Norman) BN2A MK. 111 Series Airplanes

What this AD requires

This amendment revises Airworthiness Directive (AD) 86-07-02, which currently requires repetitively inspecting the junction of the torque link lug and upper case of the main landing gear (MLG) torque link assemblies for cracks on Pilatus Britten-Norman Ltd. (Pilatus Britten-Norman) BN-2A, BN-2B, BN-2T, and BN2A MK. 111 series airplanes, and replacing any part found cracked with a like part. This AD removes from the applicability the BN-2A, BN-2B, and BN-2T series airplanes, and retains the repetitive inspection and replacement (if necessary) requirements of AD 86-07-02 for the BN2A MK. 111 series airplanes. This AD results from the Federal Aviation Administration's determination that additional AD action needs to be taken on the BN-2A, BN-2B, and BN-2T series airplanes. This additional action will be addressed in a separate AD. The actions specified by this AD are intended to prevent failure of the main landing gear caused by cracks in the torque link area, which could lead to loss of control of the airplane during landing operations.

Repetitive inspection. Re-inspect. The next-due date/hours depend on this aircraft’s time in service — a records report computes it from the logbooks.

Which aircraft AD 97-27785 applies to

MakesPilatus Britten-Norman

ModelsBN-2

Specific serial applicability list is in the preceding applicability provision, not present in this excerpt (supersedes/references AD 86-07-02). Addresses cracks at the main landing gear torque link lug/upper case junction per Fairey Hydraulics SB 32-7/32-10 and Pilatus Britten-Norman SB BN-2/SB.173 and BN-2/SB.209; only matched-manufacturer gear pairs may be used as replacements.

Whether AD 97-27785 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.

Date — When the work was done.

Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.

Signature & certificate — The A&P/IA who returned it to service, with certificate number.

Is AD 97-27785 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.